The Cooperative Extension Service, by regulation, shall provide for the organization within each community of a voluntary association in which all agricultural producers who are citizens of this state and residents in such community shall be entitled to equal participation; for the selection by each such association of a community committee, which shall be composed of three members of such association; and for a chairman to be chosen for each such community committee. The Cooperative Extension Service shall also provide for the selection by the members of such community committees within each county of a county committee for such county, to be composed of three members of such community committees, and for the selection of a chairman of each such county committee.